共查询到20条相似文献,搜索用时 46 毫秒
1.
B. G. Sukhov N. K. Gusarova N. I. Ivanova M. V. Bogdanova O. N. Kazheva G. G. Aleksandrov O. A. D’yachenko L. M. Sinegovskaya S. F. Malysheva B. A. Trofimov 《Journal of Structural Chemistry》2005,46(6):1066-1071
Bis(2-phenylethyl)phosphine selenide was obtained with 86% yield from bis(2-phenylethyl)phosphine and selenium. XRD, IR, UV, and multinuclear NMR spectroscopic studies revealed that the phosphorus atom in the bis(2-phenylethyl)phosphine selenide molecule is four-coordinated irrespective of the phase state (crystals or solution). 相似文献
2.
P.?A.?Volkov A.?A.?Telezhkin N.?I.?Ivanova K.?O.?Khrapova A.?I.?Albanov N.?K.?Gusarova B.?A.?Trofimov
The reaction between 4-methylpyridine, alkyl propiolates, and secondary phosphine oxides proceeded as N-vinylation-C-phosphorylation with stereo- and regioselective formation of (E)-N-ethenyl-C2- phosphoryl-1,2-dihydropyridines [when using bis(2-phenylethyl)phosphine oxide] or (E)-N-ethenyl-C4- phosphoryl-1,4-dihydropyridines (when using diphenylphosphine oxide). The process occurred at 60–62°C within 3 h to give functional dihydropyridines in 40–82% yield. Under similar conditions, bis(2-phenylethyl) phosphine sulfide and selenide reacted with alkyl propiolates preferably by nucleophilic PH-monoaddition at the triple bond. 相似文献
3.
S. F. Malysheva N. I. Ivanova N. A. Belogorlova M. Ya. Khil'ko L. I. Larina N. K. Gusarova B. A. Trofimov 《Chemistry of Heterocyclic Compounds》1998,34(9):1023-1026
The nucleophilic addition of 2-phenylethylphosphine, bis(2-phenylethyl)phosphine oxide, and bis(2-phenylpropyl)phosphine oxide to 3-thiolene 1,1-dioxide catalyzed by the KOH-DMSO system leads to bis(3-thioanil) (2-phenylethyl)phosphine oxide, bis(2-phenylethyl) (3-thianil)phosphine oxide, and bis(2-phenylpropyl) (3-thioanil)phosphine oxide, respectively.Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 664033 Irkutsk. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1195–1198, September, 1998. 相似文献
4.
Preconcentration of gold,silver, palladium,platinum, and ruthenium with organophosphorus extractants
V. I. Men’shikov I. Yu. Voronova O. A. Proidakova S. F. Malysheva N. I. Ivanova N. A. Belogorlova N. K. Gusarova B. A. Trofimov 《Russian Journal of Applied Chemistry》2009,82(2):183-189
Extraction of noble metals in acid media with new tertiary phosphines and phosphine chalcogenides was examined. Tristyrylphosphine, tristyrylphosphine sulfide tris(2-phenylethyl)phosphine oxide, tris-(2-phenylethyl)phosphine sulfide, bis(2-phenylethyl)[2-(propylthio)ethyl]phosphine oxide, bis(2-phenylethyl)-[2-(butylthio)ethyl]phosphine oxide, and tris[2-(butylthio)ethyl]phosphine oxide were used as extractants. The suitability of the extractants for determination of Au, Ag, and Pd in rock and ore samples was elucidated. 相似文献
5.
《Journal of Coordination Chemistry》2012,65(3):353-362
Crystal structures of mercury(II) complexes with a bis(tertiary phosphine selenide), namely 1,1'-methylenebis(diphenylphosphine selenide) $\{{\rm Ph_2P(Se){{\hskip -1pt -\!\!\!- \hskip-.5pt}} CH_2{{\hskip -1pt -\!\!\!- \hskip-.5pt}} P(Se)Ph_2,\ dpmSe_2}\}$ 相似文献
6.
S. I. Verkhoturova T. I. Kazantseva S. N. Arbuzova A. I. Albanov N. K. Gusarova B. A. Trofimov 《Russian Journal of General Chemistry》2014,84(9):1742-1747
Diphenyl- or bis(2-phenylethyl)phosphine sulfides and -phosphine selenides react with diallylamine under radical initiation (UV or AIBN) to afford the corresponding diadducts and tetrahydropyrrolylmethyl phosphine chalcogenides. The yield and the ratio of the products depend on the structure of the starting secondary phosphine chalcogenides. 相似文献
7.
Sergey V. Fedorov Leonid B. Krivdin Yury Yu. Rusakov Igor A. Ushakov Natalia V. Istomina Natalia A. Belogorlova Svetlana F. Malysheva Nina K. Gusarova Boris A. Trofimov 《Magnetic resonance in chemistry : MRC》2009,47(4):288-299
Theoretical energy‐based conformational analysis of bis(2‐phenethyl)vinylphosphine and related phosphine oxide, sulfide and selenide synthesized from available secondary phosphine chalcogenides and vinyl sulfoxides is performed at the MP2/6‐311G** level to study stereochemical behavior of their 31P–1H spin–spin coupling constants measured experimentally and calculated at different levels of theory. All four title compounds are shown to exist in the equilibrium mixture of two conformers: major planar s‐cis and minor orthogonal ones, while 31P–1 H spin–spin coupling constants under study are found to demonstrate marked stereochemical dependences with respect to the geometry of the coupling pathways, and to the internal rotation of the vinyl group around the P(X)‐C bonds (X = LP, O, S and Se), opening a new guide in the conformational studies of unsaturated phosphines and phosphine chalcogenides. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
8.
Nataliya A. Chernysheva Svetlana V. Yas’ko Nina K. Gusarova Anna A. Tatarinova Ludmila V. Klyba Boris A. Trofimov 《Mendeleev Communications》2010,20(6):346-347
The regiospecific addition of secondary phosphine sulfide and phosphine selenide to alkyl vinyl tellurides proceeds under radical initiation (AIBN, 65–70 °C, 2.5–3.5 h) to afford the anti-Markovnikov adducts, (2-alkyltellanylethyl)phosphine chalcogenides, in 86–99% yields. 相似文献
9.
M. Yu. Dvorko T. E. Glotova I. A. Ushakov N. K. Gusarova 《Russian Journal of Organic Chemistry》2010,46(4):485-490
Secondary phosphine oxides reacted with 1-alkanoyl-2-phenylacetylenes in chemoselective fashion under mild conditions (20°C,
THF) in the absence of a catalyst (diphenylphosphine oxide) or in the presence of potassium hydroxide [bis(2-phenylethyl)phosphine
oxide] to give 1-alkyl-1-diphenyl(or 2-phenylethyl)-phosphoryl-3-phenylprop-2-yn-1-ols in up to 96% yield. The reaction of
diphenylphosphine oxide with 1-alkanoyl-2-phenylacetylenes in the system KOH-THF (20°C) afforded not only adducts at the carbonyl
group but also products of double α,β-addition at the triple bond, 2,3-bis(diphenylphosphoryl)-3-phenylpropan-1-ones. 相似文献
10.
Ya. A. Vereshchagina D. V. Chachkov A. Z. Alimova E. A. Ishmaeva S. F. Malysheva 《Russian Journal of Organic Chemistry》2012,48(10):1320-1322
Conformational analysis of bis(2-phenylalkyl)phosphine selenides was performed by the dipole moment method and quantum-chemical calculations. Bis(2-phenylpropyl)phosphine selenide was found to exist as a mixture of several conformers, the most energetically favorable of which being characterized by gauche (non-eclipsed) orientation of the P=Se and $C_{sp^3 } - C_{sp^3 } $ bonds. 相似文献
11.
N. I. Ivanova P. A. Volkov L. V. Baikalova N. K. Gusarova B. A. Trofimov 《Chemistry of Heterocyclic Compounds》2008,44(11):1359-1364
The nucleophilic addition of bis[2-(2-pyridyl)ethyl]phosphine sulfide and bis[2-(2-pyridyl)-ethyl]phosphine selenide to 2-formyl-1-organylimidazoles
and benzimidazoles occurs efficiently without catalysis at room temperature to give functionalized heterocyclic compounds
containing imidazole, benzimidazole, and pyridine rings and also chalcogenophosphoryl and hydroxyl groups.
Dedicated to Professor A. Pozharskii on his 70th jubilee
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1669–1675, November, 2008. 相似文献
12.
A 1,2-dithienylethene compound bearing bis(phosphine) groups (1o) represents a new class of photoresponsive ligands where there are steric and electronic differences between two photogenerated isomers. The coordination chemistry of this ligand class is demonstrated by preparing a gold(I) complex (2o) and a phosphine selenide (3o). 相似文献
13.
Graham C. Saunders 《Phosphorus, sulfur, and silicon and the related elements》2013,188(5):525-538
Abstract The crystal structure of bis{bis(4-trifluoromethyltetrafluorophenyl)phosphino}-methane 2 determined by single crystal X-ray diffraction comprises pairs of molecules related by an inversion center and possessing short P???P distances. The molecular structure and the structure of the pairs are similar to those in the crystal structure of bis{bis(pentafluorophenyl)-phosphino}methane, although the packing is different. Comparison with the structures of bis(diphenylphosphino)methane and bis{bis(pentafluorophenyl)phosphine}difluoromethane suggests that intramolecular C–H???F–C interactions are the most important factor in determining the presence of the short P???P distances in the crystal structures of bis(diarylphosphino)methanes. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. 相似文献
14.
Kurkutov E. O. Potapov V. A. Musalov M. V. Amosova S. V. 《Russian Journal of General Chemistry》2017,87(2):357-358
The reaction of selenium dihalides with 2-vinyloxyethanol has been performed for the first time, and the method of preparation of bis(1,3-dioxolan-2-ylmethyl)selenide in quantitative yield has been proposed.
相似文献15.
Photolysis of [Me2SiSiMe2)[C5H4Fe(CO2)]2with a series of bis(phosphine)ligands Ph2P(CH2)n PPh2(n=1-4) leads to the formation of the corresponding diiron complexes with intramolecular and intermolecular bis(phosphine) substitution.When these complexes were heated in refluxing xylene.only in the complexes with intermolecular bis(phosphine )substitution the thermal rearrangement reaction occurred. 相似文献
16.
D'yachkova S. G. Gusarova N. K. Nikitin M. V. Aksamentova T. N. Chipanina N. N. Nikitina E. A. Trofimov B. A. 《Russian Journal of General Chemistry》2001,71(11):1717-1720
Alkylthiochloroacetylenes regio- and stereospecifically react with di(2-phenylethyl)phosphine oxide in dioxane at 20-22°C in the presence of potassium hydroxide to form 1-chloro-2-(alkylthio)vinyl[di(2-phenylethyl)]phosphine oxides in a 78-85% yield. According to IR and 1H and 3
1P NMR data, dielectrometric measurements, and quantum-chemical calculations, the obtained adducts have the Z configuration and exist mainly in the sp,sp conformation. 相似文献
17.
Svetlana F. Malysheva Natal’ya A. Belogorlova Nina K. Gusarova Alexander V. Artem’ev Alexander I. Albanov Boris A. Trofimov 《Phosphorus, sulfur, and silicon and the related elements》2013,188(8):1688-1693
Abstract Red phosphorus reacts with allylbenzene in the superbase system KOH-DMSO (130°C, 3 h, Ar) to give a mixture of bis(1-methyl-2-phenylethyl)phosphane (1), bis(1-methyl-2-phenylethyl)phosphane oxide (2), and 1-methyl-2-phenylethylphosphinic acid (3). Secondary phosphane oxide 2 and phosphinic acid 3 have been isolated from this mixture in 35% and 32% yield, respectively. Microwave activation of the reaction (200 W, 30 min) affords secondary phosphane 1 as the main product in 48% yield. GRAPHICAL ABSTRACT 相似文献
18.
N. K. Gusarova P. A. Volkov N. I. Ivanova N. A. Chernysheva S. V. Yas’ko A. I. Albanov B. A. Trofimov 《Russian Journal of General Chemistry》2010,80(8):1602-1608
Under the conditions of free-radical initiation (AIBN, UV irradiation), divinyl selenide regioselectively reacts with secondary
phosphine sulfides and phosphine selenides to afford, depending on the ratio of the reagents, mono- or diadducts mainly of
the anti-Markownikoff structure. The conditions which allow obtaining the diadducts in up to 97% yield are found. By the example
of 2-{[2-(diphenethylphosphoroselenoyl) ethyl]selanyl}ethyl(diphenethyl)phosphine selenide the diadducts were shown to react
with aqueous hydrogen peroxide at 53–56°C to give vinyl(diphenethyl)phosphine oxide in 76% yield. 相似文献
19.
Abstract The synthesis and the complex formation of chiral heterotopic ligands with two different binding sites each capable of bonding a different type of metal are described. The action of bis(dimethylamino) aryl phosphine on (S)-(+)-prolinol gives rise to the kinetic stereoisomer (2S,4S)-2-phenyl-1,3,2-oxazaphospholidine 1 and the thermodynamic stereoisomer (2R,4S)-2-phenyl-1,3,2-oxazaphospholidine 2. 1 is then totally converted into 2 at the end of the reaction. The Michaelis Arbuzov reaction of 2 with benzylbromide affords (Rp)-benzylaryl-(2-(S)-bromomethyl pyrrolidine-1-yl) phosphine oxide 3 in 80% yield. Compound 3 is an ideal chiral precursor for the synthesis of chiral hybrid phosphine-phosphine oxide ligands. The bromide atom is smoothly displaced by lithium diphenylphosphide to afford in 80% yield (Rp)-benzylaryl-(2-(S)-diphenylphosphinomethylpyrrolidine-1-yl) phosphine oxide 5. These reaction are proved to be totally stereoselective : the Michaelis Arbuzov reaction does not change the configuration at C2 in the proline ring. The relative configuration (Rp) of 5 (aryl = phenyl) was determinated by X-ray diffraction, from the known configuration of (S)-(+)-prolinol. 相似文献
20.
David P. Bernal Nathaniel Bankey Robert C. Cockayne Eric Fossum 《Journal of polymer science. Part A, Polymer chemistry》2002,40(10):1456-1467
A series of ABx‐type triarylphosphine oxide monomers, bis‐(4‐fluorophenyl)‐(4‐hydroxyphenyl)phosphine oxide ( 4a ), bis‐(3,4‐difluorophenyl)‐(4‐hydroxyphenyl)phosphine oxide ( 4b ), and 4‐hydroxyphenyl‐bis‐(3,4,5‐trifluorophenyl)phosphine oxide ( 4c ) were prepared, characterized, and polymerized under nucleophilic aromatic substitution conditions [N‐methylpyrrolidone (NMP), K2CO3] to provide the corresponding hyperbranched poly(arylene ether phosphine oxide)s with number‐average molecular weights ranging from 9200 to 14,600 Da. NMR spectroscopic analysis indicated the presence of highly branched products with an approximate degree of branching of 0.57. The polymers were soluble in a variety of typical organic solvents and displayed excellent thermal stability. © 2002 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 40: 1456–1467, 2002 相似文献